York YR Manual page 33

FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020
Refrigerant Level Setpoint
Displays the setpoint to which the refrigerant level is
being controlled. Not displayed if function disabled on
OPERATIONS screen.
Ramp-Up Time Remaining
Displays the time remaining in the period in which the
Refrigerant Level setpoint is being ramped to a Refrig-
erant Level target setpoint. Not displayed if Refriger-
ant Level function disabled on OPERATIONS screen
or ramp not in effect. Service Technicians refer to
OptiView Control Center Service Instructions (Form
160.81-M1).
Programmable
High Pressure Warning Threshold
Access Level Required: SERVICE
This value allows the user to define the condenser pres-
sure at which the chiller will initiate a warning.
Freeze Warning (Enabled / Disabled)
Access Level Required: SERVICE
Enables and disables the standby chiller freeze pro-
tection feature. Service Technicians refer to OptiView
Control Center Service Instructions (Form 160.81-
M1).
Freeze Time
Access Level Required: SERVICE
Only displayed if Freeze Warning feature is Enabled.
Allows the user to define the Freeze Warning bypass
time (30 to 60 minutes). Standby chiller freeze warn-
ings are bypassed until the standby chiller has been
shutdown for at least this amount of time. Service
Technicians refer to OptiView Control Center Service
Instructions (Form 160.81-M1).
Drop Leg (Enabled/Disabled)
Access Level Required: SERVICE
If the Drop Leg temperature sensor is present on the
chiller, the display of this temperature should be en-
abled. If the chiller is not equipped with the sensor, it
should be disabled. Service Technicians refer to OptiV-
iew Control Center Service Instructions (Form 160.81-
M1).
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW™ CONTROL CENTER
Fault Acknowledge
(Software version C.MLM.05.05.xxx (and later) or
C.OPT.05.05.302 (and later))
Access Level Required: SERVICE
This allows clearing of the High Condenser Pressure
Fault While Shutdown ("Condenser- High Pressure –
Stopped"). Service Technicians refer to OptiView Con-
trol Center Service Instructions (Form 160.81-M1).
Pump Delay
(Software version C.MLM.05.06.xxx (and later) or
C.OPT.05.06.xxx (and later)
Access Level Required: SERVICE
This allows a delay to be inserted between the compres-
sor motor start and the condenser pump start. Program-
mable over the range of 0 to 90 seconds. The delay
timer will start coincident with the compressor mo-
tor start. At the completion of the time delay, contacts
TB2-150/151 will close to start the condenser pump.
Service Technicians refer to YORK Service Manual
160.81- M1.
Navigation
Home
Access Level Required: VIEW
Causes an instant return to the HOME screen.
Refrigerant Level Control
Access Level Required: SERVICE
Moves to the Refrigerant Level sub-screen allowing
programming of the refrigerant liquid level control
setpoints. Only displayed if level control has been en-
abled.
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